<template>
  <section class="main">
    <input id="toggle-all" class="toggle-all" type="checkbox" />
    <label for="toggle-all">Mark all as complete</label>
    <ul class="todo-list">
      <!-- 当任务已完成，可以给 li 加上 completed 类，会让元素加上删除线 -->
      <li :class="{ completed: item.done }" v-for="item in list" :key="item.id">
        <div class="view">
          <!-- v-model不能用，因为违反了单向数据流直接改了父组件数据list -->
          <input
            class="toggle"
            type="checkbox"
            :checked="item.done"
            @change="handleChange(item.id)"
          />
          <label>{{ item.name }}</label>
          <button class="destroy" @click="handleDel(item.id)"></button>
        </div>
      </li>
    </ul>
  </section>
</template>

<script>
export default {
  props: {
    // 必填 type是数组
    list: {
      required: true,
      type: Array,
    },
  },
  methods: {
    handleChange(id) {
      //   console.log(id);
      this.$emit("changeFn", id);
    },
    handleDel(id) {
      //   console.log(id);
      this.$emit("del", id);
    },
  },
};
</script>

<style>
</style>